The perl Cookbook recipe 7.6 says they are the same...

<snippet from the book>

__DATA__ and __END__ indicate the logical end of a module or script before the physical end of the file is reached. Text after __DATA__ or __END__ can be read through the per-package DATA filehandle. For example, take the hypothetical module Primes. Text after __DATA__ in Primes.pm can be read from the Primes::DATA filehandle.

__END__ behaves as a synonym for __DATA in the main package. Text after__END__ tokens in modules is inaccessable.

In reply to Re: __END__ is equivalent to __DATA__ ? by mifflin
in thread __END__ is equivalent to __DATA__ ? by johnnywang

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